As you are cloning the theme so the priority is given to css that is in parent theme. You have two options:-
1)Use important:-
.navbar .nav > .active > a, .navbar .nav > .active > a:hover, .navbar .nav > .active > a:focus, .navbar .nav li.dropdown.open > .dropdown-toggle, .navbar .nav li.dropdown.active > .dropdown-toggle, .navbar .nav li.dropdown.open.active > .dropdown-toggle, .navbar .btn-navbar:hover, .navbar .btn-navbar:focus, .navbar .btn-navbar:active, .navbar .btn-navbar.active, .navbar .btn-navbar.disabled, .navbar .btn-navbar[disabled], .dropup, .slide-btn, a.featured_port_projects_btn, .purchase_main_content, .purchase_now_btn, .Search_btn, .Search_btn, .search-btn, .read_more, .sign_up, .newsletter_btn, a.aboutus_readmore, a.blog_section_readmore, a.blog_section2_readmore, .more-link, .comment_btn, #comment_btn, .button_red, .shortcode_btn, .portfolio_showcase .portfolio_showcase_icons a, .portfolio_tabs li.active > a, .pagination ul li a.active, .pagination > ul > li > a:hover, #panel-admin p a.onclick_default, #wp-calendar caption, .onclick_default, .callout_now_btn, .wpcf7-submit, .post-password-form input[type=”submit”]
{
background-color: #6EBB25!important;
}
2) Use parent class:-
.container .navbar .nav > .active > a,.container .navbar .nav > .active > a:hover,.container .navbar .nav > .active > a:focus,.container .navbar .nav li.dropdown.open > .dropdown-toggle,.container .navbar .nav li.dropdown.active > .dropdown-toggle,.container .navbar .nav li.dropdown.open.active > .dropdown-toggle,.container .navbar .btn-navbar:hover,.container .navbar .btn-navbar:focus,.container .navbar .btn-navbar:active,.container .navbar .btn-navbar.active,.container .navbar .btn-navbar.disabled,.container .navbar .btn-navbar[disabled],.container .dropup,.container .slide-btn,.container a.featured_port_projects_btn,.container .purchase_main_content,.container .purchase_now_btn,.container .Search_btn,.container .Search_btn,.container .search-btn,.container .read_more,.container .sign_up,.container .newsletter_btn,.container a.aboutus_readmore,.container a.blog_section_readmore,.container a.blog_section2_readmore,.container .more-link,.container .comment_btn,.container #comment_btn,.container .button_red,.container .shortcode_btn,.container .portfolio_showcase .portfolio_showcase_icons a,.container .portfolio_tabs li.active > a,.container .pagination ul li a.active,.container .pagination > ul > li > a:hover,.container #panel-admin p a.onclick_default,.container #wp-calendar caption,.container .onclick_default,.container .callout_now_btn,.container .wpcf7-submit,.container .post-password-form input[type=”submit”]
{
background-color: #6EBB25;
}
Best Regards
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